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style: Add simple parsing and matching support for :has
Parsing is behind a config value `layout.css.has-selectors.enabled`. This change does not support p:has(> a) combinators, but will handle them gracefully, just not matching on them. Differential Revision: https://phabricator.services.mozilla.com/D149515
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8 changed files with 85 additions and 10 deletions
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@ -285,6 +285,11 @@ where
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Some(Self::new(sibling, self.snapshot_map))
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}
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fn first_element_child(&self) -> Option<Self> {
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let child = self.element.first_element_child()?;
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Some(Self::new(child, self.snapshot_map))
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}
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#[inline]
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fn is_html_element_in_html_document(&self) -> bool {
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self.element.is_html_element_in_html_document()
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